<?php
ob_start();
$a = 22;
$b = 33;
$a ^= $b;
$b ^= $a;
$a ^= $b;
print_r($a);
echo "\n";
print_r($b);

ob_clean();
$a = 123.456;
$a |= 0;
print_r($a);

ob_clean();
$a = 100;
$a >>= 2;
print_r($a);

ob_clean();
$a = 100;
$a <<= 2;
print_r($a);

ob_clean();
$a = 12;
$b = 8;
$c = ($a&$b)+(($a^$b)>>1);
print_r($c);
